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Global variables start with $.ProgramBefore initialization, the global variable has a special value nil. Special variables starting with $ and with a single character are listed here. for example, $ contains the process ID of the Ruby interpreter, which is read-only. here are the main system variables and their meanings (details can be found in the ruby reference manual ): $! Last error message $ @ Er

Ruby is a scripting language for simple and fast object -Oriented programming (object-oriented programming). Simple Introduction Ruby is open source and available on the web for free, but requires a license . Ruby is a universal, interpreted programming language . Ruby is a

Basic Learning Ruby--Basic Learning (i) Project folder description Ruby-Basic Learning (ii) foreign key configuration for cascading deletions Ruby-Basic Learning (c) Setting time in China timezone Ruby--Basic Learning (iv) Timedate processing Ruby-Ba

How to Improve Ruby On Rails Performance 1 Introduction to Introduction It is always said that Rails is so slow that it has become a common issue in the Ruby and Rails communities. However, this statement is not true. As long as you use Rails correctly, it is not difficult to increase the running speed of your application by 10 times. So how can we optimize your application? Let's take a look at the followi

Author: published by tianen Beijing Aerospace Publishing House. Ruby is a language with the word "Ruby ". Rails is a technical framework. Its word is "Rails ". The meaning of "Ruby on Rails" is that it is full of Ruby rails. Rails is a B/S structure programming framework based on the

A summary of some basic syntax knowledge points in Ruby. Let's write a simple ruby program. All Ruby source files will use the extension. rb. Therefore, put the following source code in a test. rb file. #!/usr/bin/ruby -wputs "Hello, Ruby!"; Here, if you have installed the

Ruby is an interpretive, object-oriented, dynamic type of language. The strategy adopted by Ruby is to find a balance between flexibility and run-time security. With the advent of the rails framework, Ruby also blockbuster around 2006 and also guides people back to the fun of programming. Although Ruby is not as effici

Let's write a simple ruby program. All Ruby source files will be in extension. RB. So, put the following source code in a test.rb file. #!/usr/bin/ruby-w puts "Hello, ruby!"; Here, suppose you have a Ruby interpreter installed, which can be found in the/usr/b

[Note] This is an article praising Ruby.Article!!! It's not too late Note: This is an article about subjective consciousness. It does not aim to persuade you to use or not use ruby, or any other technology. The Environment involved in this article is web development, rather than general programming. I want to use this article to explainCommunitySome Opinions on Ruby and remind people to face new things wi

Brief introduction Ruby is an extremely rich, free, simple, extensible, portable, object-oriented scripting language. Recently, it has been widely popular in the Web field. This is partly due to the very powerful WEB application development Framework Rails,rails is written in Ruby. Rails, also known as Ruby on Rails (ROR), as the name suggests, provides a very p

Ruby programming language is developed by the Japanese pine line, is a simple and fast object-oriented programming language, today mainly talk about the ruby framework--ruby on Rails (http://www.maiziedu.com/course/ruby/), Maybe some friends don't like Ruby, but as a languag

Explore some methods to optimize Ruby on Rails performance, rubyrails 1. There are two reasons for slowing down your Rails application: Ruby and Rails should not be used as the preferred choice. (I used Ruby and Rails to do something I was not good) Excessive memory consumption leads to a large amount of time for garbage collection. Rails is a pleasant fram

Ruby is not very popular, so it is difficult to draw conclusions at present. However, from the perspective of recruitment, there are still a few companies using Ruby. From the perspective of salary, Ruby is quite high compared with others, the main reason may be that there are fewer students. programming languages are universal. It is not a bad thing to learn a l

How to learn ruby from 0 on Rails (stroll) Ruby is a programming language, and Ruby on Rails is a web framework for Ruby, referred to as rails. There are a lot of people who are interested in Rails, but don't know where to start and what to learn, because they have answered similar questions on multiple occasions, so t

The production and Running Environments recommended by Ruby on Rails are Linux/FreeBSD/Unix, that is, UNIX operating systems. They use Lighttpd + fcgi solutions. I will take the Linux operating system, Lighttpd + fcgi, MySQL database as an example, from Source code Compilation and installation start. Before installation, ensure that the GCC compiler has been installed in the Linux operating system. Otherwise, use the Linux installation CD to install

In the Ruby language, the object is the basic unit, and all of the elements can be said to be objects. As previously understood for object-oriented programs, an object is a set of programs that contains a collection of specific properties and methods. An object is defined by a class and behaves as an object instance. That is, the object is an instantiation of the class [2].Basic elements of the Ruby languag

Php Chinese network (www.php.cn) provides the most comprehensive basic tutorial on programming technology, introducing HTML, CSS, Javascript, Python, Java, Ruby, C, PHP, basic knowledge of MySQL and other programming languages. At the same time, this site also provides a large number of online instances, through which you can better learn programming... Reply content: Let's talk about your point of view: you must first understand what the goals of the

Introduction: This article describes how to use the Eclipse plug-in Ruby Development Tools (RDT), a plug-in that enables eclipse to become a first-class Ruby development environment. Ruby developers who want to leverage the rich infrastructure of the Eclipse community to support development will benefit from this article, as will the Java developers interested in

1. Writing should be standardized, rather than creating different styles like C.Java is obviously a language that is easy to unify the programming style, while Ruby is obviously a language that is difficult to unify the programming style. Someone in the javaeye forum once said: Reference The Java language, the master and the Low-hand code are similar, while Ruby is different. The syntax of the Java program

Ruby, as an emerging language, has developed rapidly over the past few years with the help of the rails killer application. This articleArticleThis is my summary of Ruby over the past month. Of course, the main tone is for reference. Peter Cooper's five essentials for your ruby toolbox. To put it bluntly, let's start. Summary: Rubygems A good id